What is it that the student of knowledge should preoccupy himself with?

A student of knowledge has to utilize his time in the obedience of Allah (سبحانه وتعالى), seeking knowledge and in attending the circles of knowledge. And there is no problem in him hearing the scholars warning against and clarifying the characteristics of the people of innovation so that he is aware of them. But as for us spending all of our time in speaking about them and not busying ourselves with the seeking of the knowledge which benefits us, then that is without a doubt a huge and grave mistake.